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UNITED `sTATEs`1 ATEivT oEEroE.

DANIEL POOLE, OF MOUNT CARMEL, ILLINOIS.

QUARTZ-CRUSHER.

Specification of Letters Patent No. 10,992, dated May 30, 1854.

To all whom t may concern Be it known that I, 'DANIEL POOLE, of MountCarmel, in the county of W'abash and State of Illinois, have invented anew and useful Improvement in Machines for Pulver* izing Gold and CopperQuartz, called Pooles Quartz-Masher; and I do hereby declare that thefollowing is a full, clear, and exact description of the constructionand operation of the same, reference being had to the annexed drawings,forming part of this specification, in which--v i Figure l is a frontelevation of the machine. w a: of Fig. l, perpendicular to the aXes ofthe rollers.

Similar letters of reference in the several figures denote the same partof the machine.

The nature of my invention consists in the construction of a peculiarlygrooved roller hereafter to be described, and in the combination o-f apair of said grooved rollers, with a series of cylindrical rollers usedin pairs, for the purpose of crushing gold and copper quartz; therollers being arranged as will be described, and the ore fed steadily tothe upper pair by means of an endless apron connected with the machineand driven as `will be hereafter set forth.

To enable others skilled inthe art to make and use my invention I willproceed to describe its construction and operation.

-In the drawing A A', B B, and O C are the rollers secured to shaftswhich rest in the side pieces D of the frame, as shown in Fig. 1, theshafts a, .7), c, of the rollers A, B, C, being seen, While the shaftsof A', B', C are hid. Upon the shafts of the rollers A, B, C

are the cog wheels a, b, c', giving motion to the rollers A', B, C whileby reason of the cog wheels d, e, f and d e f, the several pairs ofrollers are made to revolve inward as shown by the arrows in Fig. 2.

F is the endless apron upon which the ore is thrown; it passes over theshafts z' z", and has motion communicated to it by reason of the band nconnecting the pulleys Z, and m, the former on the shaft z' and thelatter on the shaft c of the roller C. The shafts z' z" are connected bythe band 0 over the Fig. 2 is a vertical section on line pulleys p p.Motion is given to 'the entire machine by power applied to the shaft aof the roller A to which in the drawing the crank K is secured.

The rollers A A are formed as shown in Fig. 2 with the broad grooves rand small grooves S running parallel to the axis of the roller, thebottoms of the broad groovesI being concentric wit-h the outer surfaceof the roller, and the corners of said grooves rounded off as shown inthe drawing, the object of these grooves being to `receive the stone andprevent the slipping up of the same under the crushing operation, aswould obtain in the use of cylindrical rollers. All these rollers aremade of chill cast iron, and of the requisite dimensions for the size ofore to be pulverized.

The operation of my improved machine is as follows: Power being appliedto the crank Ka rotary motion is produced in all the rollers asindicated by the arrows in Fig. 2, while at the same time the endlessapron moves as shown by arrow 2 of the same figure. Ore being placedupon said apron, it is carried steadily over the shaft 'a' to therollers A A and by falling in between the broad grooves?I is immediatelycrushed; the form ofthe groove preventing the slipping up which wouldtake place if these rollers were cylindrical. The crushed ore on leavingthe rollers A A enters between the pair B B, where it is still farthercrushed by passing through the space between them, and is by the actionof the rollers C C', completely pulverized and ready for theamalgamating process.

This machine is simple in its construction and effective in itsoperation, the broad grooves r having their bottoms concentric with theouter face of the roller, act as cylindrical rollers, while their sidesprevent the slipping of the stone, thus obviating the disadvantages inthe employment of cylindrical rollers for the rst reception ofthe ore.The smaller grooves s serve to receive small stones which would beimperfectly crushed in the large grooves.

The employment of the endless feeder ren-` ders the supply of orecontinuous and at the same time affords the means of regulating Intestimony whereof, I have hereunto the same, Wit-heus deranging theeffective signed my name before tWo subscribing Wt- 10 and even actionof the machine. nesses.

What I claim as my inventionv and desire v 5 to secure by LettersPatent, is- DAN IEL I claim the arrangement and construction `Witnesses:

of the machine substantially as herein de- Gmo. PATTEN, scribed. JOHN L.SMITH.

